Onan DJA Series User Manual

ENGINE TROUBLESHOOTING
OPERATOR'S
TROUBLE-SHOOTING GUIDE ?
for g
ONAN DIESEL ENGINES
h
(Air Cooled)
CAUSE
Hard
Starting or
Failure
to Start 1
Starter
Motor
Doesn't
Turn
1
Engine
Mi
sfi res 1
Speed
Too High 1
Speed
Too Low 1
x
Hunting Condition 1
No
Governor Control . 1
Poor
Sensitivity 1
Excessive
Oil Consumption
Excessive
Fuel Consumption 1
LowOil Pressure 1
High Oil Pressure 1
Diluted
Oil
Engine Overheats 1
Mechanical
Knocks |
COOLING
SYSTEM
Blown Head Gasket
•
COOLING
SYSTEM
Overheating
• • • •
COOLING
SYSTEM
Dirt on Cooling Fi ns
•
COOLING
SYSTEM
Inadequate Air Circulation (Ventilation)
•
FUEL
SYSTEM
Out of Fuel or Shut-off Valve Closed
•
FUEL
SYSTEM
Poor Quality Fuel
• •
0
•
FUEL
SYSTEM
Dirty Fuel Filters
• • •
FUEL
SYSTEM
Fuel Line Leaks
• • • •
FUEL
SYSTEM
Air in Fuel System
• • •
FUEL
SYSTEM Fuel Transfer Pump Diaphragm Leaks
• •
FUEL
SYSTEM
Incorrect Timing
• • • • •
FUEL
SYSTEM
Run for Long Periods of Time at No Load
•
FUEL
SYSTEM
Restricted Air Intake. Dirty Air Filter
0
• •
GOVERNOR
SYSTEM
Linkage Loose or Disconnected
• •
•••
GOVERNOR
SYSTEM
Linkage Binding
• •
•••
GOVERNOR
SYSTEM
Excessive Wear in Linkage
•••
GOVERNOR
SYSTEM
Incorrect Governor Adjustment
• •
•••
GOVERNOR
SYSTEM
Spring Sensitivity Too Great
nm
LUBRICATION
SYSTEM
Low Oil Supply
• • •
LUBRICATION
SYSTEM
Defective Gauge
•
LUBRICATION
SYSTEM
Excess Oil in Crankcase
• LUBRICATION
SYSTEM
Oil Leaks From Engine Base or Connections
•
LUBRICATION
SYSTEM
Crankcase Oil Too Light or Diluted
• • • •
LUBRICATION
SYSTEM
Crankcase Oil Too Heavy
• •
STARTING
SYSTEM
Battery Discharged or Defective
• •
STARTING
SYSTEM
Defective Glow Plug or Lead
• •
STARTING
SYSTEM
Load Connected When Starting
•
STARTING
SYSTEM
Open.Solenoid
• •
STARTING
SYSTEM
Defective Starter
• •

Onan DJA Series Specifications

General

Brand	Onan
Model	DJA Series
Category	Engine
Language	English